/////////////////////////////////////////////////////////////////////////////
// Name: strconv.cpp
// Purpose: Unicode conversion classes
-// Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin
+// Author: Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik
// Modified by:
// Created: 29/01/98
// RCS-ID: $Id$
-// Copyright: (c) 1999 Ove Kaaven, Robert Roebling, Vadim Zeitlin
-// Licence: wxWindows license
+// Copyright: (c) 1999 Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
#ifdef __GNUG__
#pragma implementation "strconv.h"
#endif
#pragma hdrstop
#endif
+#ifndef WX_PRECOMP
+ #include "wx/intl.h"
+ #include "wx/log.h"
+#endif // WX_PRECOMP
+
+#ifdef __WXMSW__
+ #include "wx/msw/private.h"
+#endif
+
+#ifndef __WXWINCE__
+#include <errno.h>
+#endif
+
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
+#include "wx/module.h"
+#include "wx/strconv.h"
+
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+#if wxUSE_WCHAR_T
+ WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc;
+ WXDLLIMPEXP_DATA_BASE(wxCSConv) wxConvLocal((const wxChar *)NULL);
+ WXDLLIMPEXP_DATA_BASE(wxCSConv) wxConvISO8859_1(_T("iso-8859-1"));
+#else
+ // stand-ins in absence of wchar_t
+ WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc,
+ wxConvFile,
+ wxConvISO8859_1,
+ wxConvLocal,
+ wxConvUTF8;
+#endif // wxUSE_WCHAR_T
+
+WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = &wxConvLibc;
+
+class wxStrConvModule: public wxModule
+{
+public:
+ wxStrConvModule() : wxModule() { }
+ virtual bool OnInit() { return TRUE; }
+ virtual void OnExit()
+ {
+#if wxUSE_WCHAR_T
+ wxConvLocal.Clear();
+ wxConvISO8859_1.Clear();
+#endif
+ }
+
+ DECLARE_DYNAMIC_CLASS(wxStrConvModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxStrConvModule, wxModule)
+
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#if wxUSE_WCHAR_T
+
#ifdef __SALFORDC__
- #include <clib.h>
+ #include <clib.h>
#endif
-#include "wx/debug.h"
-#include "wx/strconv.h"
+#ifdef HAVE_ICONV
+ #include <iconv.h>
+#endif
+
+#include "wx/encconv.h"
+#include "wx/fontmap.h"
-//----------------------------------------------------------------------------
-// wxConvCurrent
-//----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
-WXDLLEXPORT_DATA(wxMBConv *) wxConvCurrent = &wxConvLibc;
+#define BSWAP_UCS4(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT32_SWAP_ALWAYS(str[_c]); }
+#define BSWAP_UTF16(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT16_SWAP_ALWAYS(str[_c]); }
-#if !wxUSE_WCHAR_T
-//----------------------------------------------------------------------------
-// stand-ins in absence of wchar_t
-//----------------------------------------------------------------------------
+// under Unix SIZEOF_WCHAR_T is defined by configure, but under other platforms
+// it might be not defined - assume the most common value
+#ifndef SIZEOF_WCHAR_T
+ #define SIZEOF_WCHAR_T 2
+#endif // !defined(SIZEOF_WCHAR_T)
-WXDLLEXPORT_DATA(wxMBConv) wxConvLibc, wxConvFile;
+#if SIZEOF_WCHAR_T == 4
+ #define WC_NAME "UCS4"
+ #define WC_BSWAP BSWAP_UCS4
+ #ifdef WORDS_BIGENDIAN
+ #define WC_NAME_BEST "UCS-4BE"
+ #else
+ #define WC_NAME_BEST "UCS-4LE"
+ #endif
+#elif SIZEOF_WCHAR_T == 2
+ #define WC_NAME "UTF16"
+ #define WC_BSWAP BSWAP_UTF16
+ #define WC_UTF16
+ #ifdef WORDS_BIGENDIAN
+ #define WC_NAME_BEST "UTF-16BE"
+ #else
+ #define WC_NAME_BEST "UTF-16LE"
+ #endif
+#else // sizeof(wchar_t) != 2 nor 4
+ // I don't know what to do about this
+ #error "Weird sizeof(wchar_t): please report your platform details to wx-users mailing list"
+#endif
-#else
+// ============================================================================
+// implementation
+// ============================================================================
-//----------------------------------------------------------------------------
-// wxMBConv
-//----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// UTF-16 en/decoding
+// ----------------------------------------------------------------------------
-WXDLLEXPORT_DATA(wxMBConv) wxConvLibc;
+#ifdef WC_UTF16
-size_t wxMBConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+static size_t encode_utf16(wxUint32 input, wchar_t *output)
{
- return wxMB2WC(buf, psz, n);
+ if (input<=0xffff)
+ {
+ if (output) *output++ = (wchar_t) input;
+ return 1;
+ }
+ else if (input>=0x110000)
+ {
+ return (size_t)-1;
+ }
+ else
+ {
+ if (output)
+ {
+ *output++ = (wchar_t) ((input >> 10)+0xd7c0);
+ *output++ = (wchar_t) ((input&0x3ff)+0xdc00);
+ }
+ return 2;
+ }
}
-size_t wxMBConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+static size_t decode_utf16(const wchar_t* input, wxUint32& output)
{
- return wxWC2MB(buf, psz, n);
+ if ((*input<0xd800) || (*input>0xdfff))
+ {
+ output = *input;
+ return 1;
+ }
+ else if ((input[1]<0xdc00) || (input[1]>=0xdfff))
+ {
+ output = *input;
+ return (size_t)-1;
+ }
+ else
+ {
+ output = ((input[0] - 0xd7c0) << 10) + (input[1] - 0xdc00);
+ return 2;
+ }
}
-const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const
-{
- if (psz)
- {
- size_t nLen = MB2WC((wchar_t *) NULL, psz, 0);
- wxWCharBuffer buf(nLen);
- MB2WC((wchar_t *)(const wchar_t *) buf, psz, nLen);
- return buf;
- }
- else
- return wxWCharBuffer((wchar_t *) NULL);
-}
+#endif // WC_UTF16
-const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *psz) const
-{
- if (psz)
- {
- size_t nLen = WC2MB((char *) NULL, psz, 0);
- wxCharBuffer buf(nLen);
- WC2MB((char *)(const char *) buf, psz, nLen);
- return buf;
- }
- else
- return wxCharBuffer((char *) NULL);
-}
+// ----------------------------------------------------------------------------
+// wxMBConv
+// ----------------------------------------------------------------------------
-//----------------------------------------------------------------------------
-// standard file conversion
-//----------------------------------------------------------------------------
+#define IGNORE_LIBC 0
-WXDLLEXPORT_DATA(wxMBConvFile) wxConvFile;
+wxMBConv::~wxMBConv()
+{
+ // nothing to do here
+}
-// just use the libc conversion for now
-size_t wxMBConvFile::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+size_t wxMBConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
{
+#if IGNORE_LIBC
+ if (buf)
+ {
+ for (size_t i = 0; i < strlen( psz )+1; i++)
+ buf[i] = (wchar_t) psz[i];
+ return strlen( psz );
+ }
+ else
+ {
+ return strlen( psz );
+ }
+#else
return wxMB2WC(buf, psz, n);
+#endif
}
-size_t wxMBConvFile::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+size_t wxMBConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
{
+#if IGNORE_LIBC
+ if (buf)
+ {
+ for (size_t i = 0; i < wxStrlen( psz )+1; i++)
+ buf[i] = (char) psz[i];
+ return wxStrlen( psz );
+ }
+ else
+ {
+ return wxStrlen( psz );
+ }
+#else
return wxWC2MB(buf, psz, n);
+#endif
}
-#ifdef __WXGTK12__
-
-//----------------------------------------------------------------------------
-// standard gdk conversion
-//----------------------------------------------------------------------------
+const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const
+{
+ if ( psz )
+ {
+ // calculate the length of the buffer needed first
+ size_t nLen = MB2WC(NULL, psz, 0);
+ if ( nLen != (size_t)-1 )
+ {
+ // now do the actual conversion
+ wxWCharBuffer buf(nLen);
+ MB2WC(buf.data(), psz, nLen + 1); // with the trailing NUL
-WXDLLEXPORT_DATA(wxMBConvGdk) wxConvGdk;
+ return buf;
+ }
+ }
-#include <gdk/gdk.h>
+ wxWCharBuffer buf((wchar_t *)NULL);
-size_t wxMBConvGdk::MB2WC(wchar_t *buf, const char *psz, size_t n) const
-{
- if (buf) {
- return gdk_mbstowcs((GdkWChar *)buf, psz, n);
- } else {
- GdkWChar *nbuf = new GdkWChar[n=strlen(psz)];
- size_t len = gdk_mbstowcs(nbuf, psz, n);
- delete [] nbuf;
- return len;
- }
+ return buf;
}
-size_t wxMBConvGdk::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const
{
- char *mbstr = gdk_wcstombs((GdkWChar *)psz);
- size_t len = mbstr ? strlen(mbstr) : 0;
- if (buf) {
- if (len > n) len = n;
- memcpy(buf, psz, len);
- if (len < n) buf[len] = 0;
- }
- return len;
+ if ( pwz )
+ {
+ size_t nLen = WC2MB(NULL, pwz, 0);
+ if ( nLen != (size_t)-1 )
+ {
+ wxCharBuffer buf(nLen);
+ WC2MB(buf.data(), pwz, nLen + 1);
+
+ return buf;
+ }
+ }
+
+ wxCharBuffer buf((char *)NULL);
+
+ return buf;
}
-#endif // GTK > 1.0
// ----------------------------------------------------------------------------
// UTF-7
// ----------------------------------------------------------------------------
-WXDLLEXPORT_DATA(wxMBConvUTF7) wxConvUTF7;
+WXDLLIMPEXP_DATA_BASE(wxMBConvUTF7) wxConvUTF7;
#if 0
static char utf7_setD[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
return 0;
}
-//----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
// UTF-8
-//----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
-WXDLLEXPORT_DATA(wxMBConvUTF8) wxConvUTF8;
+WXDLLIMPEXP_DATA_BASE(wxMBConvUTF8) wxConvUTF8;
-static unsigned long utf8_max[]={0x7f,0x7ff,0xffff,0x1fffff,0x3ffffff,0x7fffffff,0xffffffff};
+static wxUint32 utf8_max[]=
+ { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff };
size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const
{
- size_t len = 0;
-
- while (*psz && ((!buf) || (len<n))) {
- unsigned char cc=*psz++, fc=cc;
- unsigned cnt;
- for (cnt=0; fc&0x80; cnt++) fc<<=1;
- if (!cnt) {
- // plain ASCII char
- if (buf) *buf++=cc;
- len++;
- } else {
- cnt--;
- if (!cnt) {
- // invalid UTF-8 sequence
- return (size_t)-1;
- } else {
- unsigned ocnt=cnt-1;
- unsigned long res=cc&(0x3f>>cnt);
- while (cnt--) {
- cc = *psz++;
- if ((cc&0xC0)!=0x80) {
- // invalid UTF-8 sequence
- return (size_t)-1;
- }
- res=(res<<6)|(cc&0x3f);
+ size_t len = 0;
+
+ while (*psz && ((!buf) || (len < n)))
+ {
+ unsigned char cc = *psz++, fc = cc;
+ unsigned cnt;
+ for (cnt = 0; fc & 0x80; cnt++)
+ fc <<= 1;
+ if (!cnt)
+ {
+ // plain ASCII char
+ if (buf)
+ *buf++ = cc;
+ len++;
}
- if (res<=utf8_max[ocnt]) {
- // illegal UTF-8 encoding
- return (size_t)-1;
+ else
+ {
+ cnt--;
+ if (!cnt)
+ {
+ // invalid UTF-8 sequence
+ return (size_t)-1;
+ }
+ else
+ {
+ unsigned ocnt = cnt - 1;
+ wxUint32 res = cc & (0x3f >> cnt);
+ while (cnt--)
+ {
+ cc = *psz++;
+ if ((cc & 0xC0) != 0x80)
+ {
+ // invalid UTF-8 sequence
+ return (size_t)-1;
+ }
+ res = (res << 6) | (cc & 0x3f);
+ }
+ if (res <= utf8_max[ocnt])
+ {
+ // illegal UTF-8 encoding
+ return (size_t)-1;
+ }
+#ifdef WC_UTF16
+ size_t pa = encode_utf16(res, buf);
+ if (pa == (size_t)-1)
+ return (size_t)-1;
+ if (buf)
+ buf += pa;
+ len += pa;
+#else // !WC_UTF16
+ if (buf)
+ *buf++ = res;
+ len++;
+#endif // WC_UTF16/!WC_UTF16
+ }
}
- if (buf) *buf++=res;
- len++;
- }
}
- }
- if (buf && (len<n)) *buf = 0;
- return len;
+ if (buf && (len < n))
+ *buf = 0;
+ return len;
}
size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const
{
- size_t len = 0;
-
- while (*psz && ((!buf) || (len<n))) {
- unsigned long cc=(*psz++)&0x7fffffff;
- unsigned cnt;
- for (cnt=0; cc>utf8_max[cnt]; cnt++);
- if (!cnt) {
- // plain ASCII char
- if (buf) *buf++=cc;
- len++;
- } else {
- len+=cnt+1;
- if (buf) {
- *buf++=(-128>>cnt)|((cc>>(cnt*6))&(0x3f>>cnt));
- while (cnt--)
- *buf++=0x80|((cc>>(cnt*6))&0x3f);
- }
- }
- }
- if (buf && (len<n)) *buf = 0;
- return len;
+ size_t len = 0;
+
+ while (*psz && ((!buf) || (len < n)))
+ {
+ wxUint32 cc;
+#ifdef WC_UTF16
+ size_t pa = decode_utf16(psz, cc);
+ psz += (pa == (size_t)-1) ? 1 : pa;
+#else
+ cc=(*psz++) & 0x7fffffff;
+#endif
+ unsigned cnt;
+ for (cnt = 0; cc > utf8_max[cnt]; cnt++) {}
+ if (!cnt)
+ {
+ // plain ASCII char
+ if (buf)
+ *buf++ = (char) cc;
+ len++;
+ }
+
+ else
+ {
+ len += cnt + 1;
+ if (buf)
+ {
+ *buf++ = (char) ((-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt)));
+ while (cnt--)
+ *buf++ = (char) (0x80 | ((cc >> (cnt * 6)) & 0x3f));
+ }
+ }
+ }
+
+ if (buf && (len<n)) *buf = 0;
+
+ return len;
}
+// ============================================================================
+// wxCharacterSet and derived classes
+// ============================================================================
+
// ----------------------------------------------------------------------------
-// specified character set
+// wxCharacterSet is the ABC for the classes below
// ----------------------------------------------------------------------------
-#ifndef WX_PRECOMP
- #include "wx/dynarray.h"
- #include "wx/filefn.h"
- #include "wx/textfile.h"
- #include "wx/tokenzr.h"
- #include "wx/utils.h"
-#endif
-
class wxCharacterSet
{
public:
- wxArrayString names;
- wchar_t *data;
+ wxCharacterSet(const wxChar*name) : cname(name) {}
+ virtual ~wxCharacterSet() {}
+ virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) = 0;
+ virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) = 0;
+ virtual bool usable() const = 0;
+public:
+ const wxChar*cname;
+};
+
+// ----------------------------------------------------------------------------
+// ID_CharSet: implementation of wxCharacterSet using an existing wxMBConv
+// ----------------------------------------------------------------------------
+
+class ID_CharSet : public wxCharacterSet
+{
+public:
+ ID_CharSet(const wxChar *name, wxMBConv *cnv)
+ : wxCharacterSet(name), work(cnv) {}
+
+ size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
+ { return work ? work->MB2WC(buf,psz,n) : (size_t)-1; }
+
+ size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
+ { return work ? work->WC2MB(buf,psz,n) : (size_t)-1; }
+
+ bool usable() const
+ { return work!=NULL; }
+public:
+ wxMBConv*work;
};
-WX_DECLARE_OBJARRAY(wxCharacterSet, wxCSArray);
-#include "wx/arrimpl.cpp"
-WX_DEFINE_OBJARRAY(wxCSArray);
-static wxCSArray wxCharsets;
+// ============================================================================
+// The classes doing conversion using the iconv_xxx() functions
+// ============================================================================
+
+#ifdef HAVE_ICONV
+
+// VS: glibc 2.1.3 is broken in that iconv() conversion to/from UCS4 fails with E2BIG
+// if output buffer is _exactly_ as big as needed. Such case is (unless there's
+// yet another bug in glibc) the only case when iconv() returns with (size_t)-1
+// (which means error) and says there are 0 bytes left in the input buffer --
+// when _real_ error occurs, bytes-left-in-input buffer is non-zero. Hence,
+// this alternative test for iconv() failure.
+// [This bug does not appear in glibc 2.2.]
+#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 1
+#define ICONV_FAILED(cres, bufLeft) ((cres == (size_t)-1) && \
+ (errno != E2BIG || bufLeft != 0))
+#else
+#define ICONV_FAILED(cres, bufLeft) (cres == (size_t)-1)
+#endif
+
+#define ICONV_CHAR_CAST(x) ((ICONV_CONST char **)(x))
+
+// ----------------------------------------------------------------------------
+// IC_CharSet: encapsulates an iconv character set
+// ----------------------------------------------------------------------------
-static void wxLoadCharacterSets(void)
+class IC_CharSet : public wxCharacterSet
{
- static bool already_loaded = FALSE;
-
- if (already_loaded) return;
-
- already_loaded = TRUE;
-#if defined(__UNIX__) && wxUSE_TEXTFILE
- // search through files in /usr/share/i18n/charmaps
- wxString fname;
- for (fname = ::wxFindFirstFile(T("/usr/share/i18n/charmaps/*"));
- !fname.IsEmpty();
- fname = ::wxFindNextFile()) {
- wxTextFile cmap(fname);
- if (cmap.Open()) {
- wxCharacterSet *cset = new wxCharacterSet;
- wxString comchar,escchar;
- bool in_charset = FALSE;
-
- // wxFprintf(stderr,T("Loaded: %s\n"),fname.c_str());
-
- wxString line;
- for (line = cmap.GetFirstLine();
- !cmap.Eof();
- line = cmap.GetNextLine()) {
- // wxFprintf(stderr,T("line contents: %s\n"),line.c_str());
- wxStringTokenizer token(line);
- wxString cmd = token.GetNextToken();
- if (cmd == comchar) {
- if (token.GetNextToken() == T("alias"))
- cset->names.Add(token.GetNextToken());
- }
- else if (cmd == T("<code_set_name>"))
- cset->names.Add(token.GetNextToken());
- else if (cmd == T("<comment_char>"))
- comchar = token.GetNextToken();
- else if (cmd == T("<escape_char>"))
- escchar = token.GetNextToken();
- else if (cmd == T("<mb_cur_min>")) {
- delete cset;
- cset = (wxCharacterSet *) NULL;
- break; // we don't support multibyte charsets ourselves (yet)
- }
- else if (cmd == T("CHARMAP")) {
- cset->data = (wchar_t *)calloc(256, sizeof(wchar_t));
- in_charset = TRUE;
- }
- else if (cmd == T("END")) {
- if (token.GetNextToken() == T("CHARMAP"))
- in_charset = FALSE;
- }
- else if (in_charset) {
- // format: <NUL> /x00 <U0000> NULL (NUL)
- // <A> /x41 <U0041> LATIN CAPITAL LETTER A
- wxString hex = token.GetNextToken();
- // skip whitespace (why doesn't wxStringTokenizer do this?)
- while (wxIsEmpty(hex) && token.HasMoreTokens()) hex = token.GetNextToken();
- wxString uni = token.GetNextToken();
- // skip whitespace again
- while (wxIsEmpty(uni) && token.HasMoreTokens()) uni = token.GetNextToken();
- if ((hex.Len() > 2) && (wxString(hex.GetChar(0)) == escchar) && (hex.GetChar(1) == T('x')) &&
- (uni.Left(2) == T("<U"))) {
- hex.MakeUpper(); uni.MakeUpper();
- int pos = ::wxHexToDec(hex.Mid(2,2));
- if (pos>=0) {
- unsigned long uni1 = ::wxHexToDec(uni.Mid(2,2));
- unsigned long uni2 = ::wxHexToDec(uni.Mid(4,2));
- cset->data[pos] = (uni1 << 16) | uni2;
- // wxFprintf(stderr,T("char %02x mapped to %04x (%c)\n"),pos,cset->data[pos],cset->data[pos]);
+public:
+ IC_CharSet(const wxChar *name);
+ virtual ~IC_CharSet();
+
+ virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n);
+ virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n);
+
+ bool usable() const
+ { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); }
+
+protected:
+ // the iconv handlers used to translate from multibyte to wide char and in
+ // the other direction
+ iconv_t m2w,
+ w2m;
+
+private:
+ // the name (for iconv_open()) of a wide char charset - if none is
+ // available on this machine, it will remain NULL
+ static const char *ms_wcCharsetName;
+
+ // true if the wide char encoding we use (i.e. ms_wcCharsetName) has
+ // different endian-ness than the native one
+ static bool ms_wcNeedsSwap;
+};
+
+const char *IC_CharSet::ms_wcCharsetName = NULL;
+bool IC_CharSet::ms_wcNeedsSwap = FALSE;
+
+IC_CharSet::IC_CharSet(const wxChar *name)
+ : wxCharacterSet(name)
+{
+ // Do it the hard way
+ char cname[100];
+ for (size_t i = 0; i < wxStrlen(name)+1; i++)
+ cname[i] = (char) name[i];
+
+ // check for charset that represents wchar_t:
+ if (ms_wcCharsetName == NULL)
+ {
+ ms_wcNeedsSwap = FALSE;
+
+ // try charset with explicit bytesex info (e.g. "UCS-4LE"):
+ ms_wcCharsetName = WC_NAME_BEST;
+ m2w = iconv_open(ms_wcCharsetName, cname);
+
+ if (m2w == (iconv_t)-1)
+ {
+ // try charset w/o bytesex info (e.g. "UCS4")
+ // and check for bytesex ourselves:
+ ms_wcCharsetName = WC_NAME;
+ m2w = iconv_open(ms_wcCharsetName, cname);
+
+ // last bet, try if it knows WCHAR_T pseudo-charset
+ if (m2w == (iconv_t)-1)
+ {
+ ms_wcCharsetName = "WCHAR_T";
+ m2w = iconv_open(ms_wcCharsetName, cname);
+ }
+
+ if (m2w != (iconv_t)-1)
+ {
+ char buf[2], *bufPtr;
+ wchar_t wbuf[2], *wbufPtr;
+ size_t insz, outsz;
+ size_t res;
+
+ buf[0] = 'A';
+ buf[1] = 0;
+ wbuf[0] = 0;
+ insz = 2;
+ outsz = SIZEOF_WCHAR_T * 2;
+ wbufPtr = wbuf;
+ bufPtr = buf;
+
+ res = iconv(m2w, ICONV_CHAR_CAST(&bufPtr), &insz,
+ (char**)&wbufPtr, &outsz);
+
+ if (ICONV_FAILED(res, insz))
+ {
+ ms_wcCharsetName = NULL;
+ wxLogLastError(wxT("iconv"));
+ wxLogError(_("Conversion to charset '%s' doesn't work."), name);
+ }
+ else
+ {
+ ms_wcNeedsSwap = wbuf[0] != (wchar_t)buf[0];
+ }
+ }
+ else
+ {
+ ms_wcCharsetName = NULL;
+
+ // VS: we must not output an error here, since wxWindows will safely
+ // fall back to using wxEncodingConverter.
+ wxLogTrace(wxT("strconv"), wxT("Impossible to convert to/from charset '%s' with iconv, falling back to wxEncodingConverter."), name);
+ //wxLogError(
}
- }
}
- }
- if (cset) {
- cset->names.Shrink();
- wxCharsets.Add(cset);
- }
+ wxLogTrace(wxT("strconv"), wxT("wchar_t charset is '%s', needs swap: %i"), ms_wcCharsetName, ms_wcNeedsSwap);
}
- }
-#endif
- wxCharsets.Shrink();
+ else // we already have ms_wcCharsetName
+ {
+ m2w = iconv_open(ms_wcCharsetName, cname);
+ }
+
+ // NB: don't ever pass NULL to iconv_open(), it may crash!
+ if ( ms_wcCharsetName )
+ {
+ w2m = iconv_open( cname, ms_wcCharsetName);
+ }
+ else
+ {
+ w2m = (iconv_t)-1;
+ }
+}
+
+IC_CharSet::~IC_CharSet()
+{
+ if ( m2w != (iconv_t)-1 )
+ iconv_close(m2w);
+ if ( w2m != (iconv_t)-1 )
+ iconv_close(w2m);
+}
+
+size_t IC_CharSet::MB2WC(wchar_t *buf, const char *psz, size_t n)
+{
+ size_t inbuf = strlen(psz);
+ size_t outbuf = n * SIZEOF_WCHAR_T;
+ size_t res, cres;
+ // VS: Use these instead of psz, buf because iconv() modifies its arguments:
+ wchar_t *bufPtr = buf;
+ const char *pszPtr = psz;
+
+ if (buf)
+ {
+ // have destination buffer, convert there
+ cres = iconv(m2w,
+ ICONV_CHAR_CAST(&pszPtr), &inbuf,
+ (char**)&bufPtr, &outbuf);
+ res = n - (outbuf / SIZEOF_WCHAR_T);
+
+ if (ms_wcNeedsSwap)
+ {
+ // convert to native endianness
+ WC_BSWAP(buf /* _not_ bufPtr */, res)
+ }
+
+ // NB: iconv was given only strlen(psz) characters on input, and so
+ // it couldn't convert the trailing zero. Let's do it ourselves
+ // if there's some room left for it in the output buffer.
+ if (res < n)
+ buf[res] = 0;
+ }
+ else
+ {
+ // no destination buffer... convert using temp buffer
+ // to calculate destination buffer requirement
+ wchar_t tbuf[8];
+ res = 0;
+ do {
+ bufPtr = tbuf;
+ outbuf = 8*SIZEOF_WCHAR_T;
+
+ cres = iconv(m2w,
+ ICONV_CHAR_CAST(&pszPtr), &inbuf,
+ (char**)&bufPtr, &outbuf );
+
+ res += 8-(outbuf/SIZEOF_WCHAR_T);
+ } while ((cres==(size_t)-1) && (errno==E2BIG));
+ }
+
+ if (ICONV_FAILED(cres, inbuf))
+ {
+ //VS: it is ok if iconv fails, hence trace only
+ wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode()));
+ return (size_t)-1;
+ }
+
+ return res;
+}
+
+size_t IC_CharSet::WC2MB(char *buf, const wchar_t *psz, size_t n)
+{
+ size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T;
+ size_t outbuf = n;
+ size_t res, cres;
+
+ wchar_t *tmpbuf = 0;
+
+ if (ms_wcNeedsSwap)
+ {
+ // need to copy to temp buffer to switch endianness
+ // this absolutely doesn't rock!
+ // (no, doing WC_BSWAP twice on the original buffer won't help, as it
+ // could be in read-only memory, or be accessed in some other thread)
+ tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T);
+ memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T);
+ WC_BSWAP(tmpbuf, inbuf)
+ psz=tmpbuf;
+ }
+
+ if (buf)
+ {
+ // have destination buffer, convert there
+ cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
+
+ res = n-outbuf;
+
+ // NB: iconv was given only wcslen(psz) characters on input, and so
+ // it couldn't convert the trailing zero. Let's do it ourselves
+ // if there's some room left for it in the output buffer.
+ if (res < n)
+ buf[0] = 0;
+ }
+ else
+ {
+ // no destination buffer... convert using temp buffer
+ // to calculate destination buffer requirement
+ char tbuf[16];
+ res = 0;
+ do {
+ buf = tbuf; outbuf = 16;
+
+ cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
+
+ res += 16 - outbuf;
+ } while ((cres==(size_t)-1) && (errno==E2BIG));
+ }
+
+ if (ms_wcNeedsSwap)
+ {
+ free(tmpbuf);
+ }
+
+ if (ICONV_FAILED(cres, inbuf))
+ {
+ //VS: it is ok if iconv fails, hence trace only
+ wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode()));
+ return (size_t)-1;
+ }
+
+ return res;
}
-static wxCharacterSet *wxFindCharacterSet(const wxChar *charset)
+#endif // HAVE_ICONV
+
+// ============================================================================
+// Win32 conversion classes
+// ============================================================================
+
+#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__)
+
+extern long wxCharsetToCodepage(const wxChar *charset); // from utils.cpp
+
+class CP_CharSet : public wxCharacterSet
+{
+public:
+ CP_CharSet(const wxChar* name)
+ : wxCharacterSet(name)
+ {
+ m_CodePage = wxCharsetToCodepage(name);
+ }
+
+ size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
+ {
+ const size_t len = ::MultiByteToWideChar
+ (
+ m_CodePage, // code page
+ 0, // flags (none)
+ psz, // input string
+ -1, // its length (NUL-terminated)
+ buf, // output string
+ buf ? n : 0 // size of output buffer
+ );
+
+ // note that it returns # of written chars for buf != NULL and *size*
+ // of the needed buffer for buf == NULL
+ return len ? (buf ? len : len - 1) : (size_t)-1;
+ }
+
+ size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
+ {
+ const size_t len = ::WideCharToMultiByte
+ (
+ m_CodePage, // code page
+ 0, // flags (none)
+ psz, // input string
+ -1, // it is (wide) NUL-terminated
+ buf, // output buffer
+ buf ? n : 0, // and its size
+ NULL, // default "replacement" char
+ NULL // [out] was it used?
+ );
+
+ // see the comment above!
+ return len ? (buf ? len : len - 1) : (size_t)-1;
+ }
+
+ bool usable() const
+ { return m_CodePage != -1; }
+
+public:
+ long m_CodePage;
+};
+#endif // defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__)
+
+// ============================================================================
+// wxEncodingConverter based conversion classes
+// ============================================================================
+
+#if wxUSE_FONTMAP
+
+class EC_CharSet : public wxCharacterSet
+{
+public:
+ // temporarily just use wxEncodingConverter stuff,
+ // so that it works while a better implementation is built
+ EC_CharSet(const wxChar* name) : wxCharacterSet(name),
+ enc(wxFONTENCODING_SYSTEM)
+ {
+ if (name)
+ enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
+
+ m_ok = m2w.Init(enc, wxFONTENCODING_UNICODE) &&
+ w2m.Init(wxFONTENCODING_UNICODE, enc);
+ }
+
+ size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n))
+ {
+ size_t inbuf = strlen(psz);
+ if (buf)
+ m2w.Convert(psz,buf);
+ return inbuf;
+ }
+
+ size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n))
+ {
+ const size_t inbuf = wxWcslen(psz);
+ if (buf)
+ w2m.Convert(psz,buf);
+
+ return inbuf;
+ }
+
+ bool usable() const { return m_ok; }
+
+public:
+ wxFontEncoding enc;
+ wxEncodingConverter m2w, w2m;
+
+ // were we initialized successfully?
+ bool m_ok;
+
+ DECLARE_NO_COPY_CLASS(EC_CharSet)
+};
+
+#endif // wxUSE_FONTMAP
+
+// ----------------------------------------------------------------------------
+// the function creating the wxCharacterSet for the specified charset on the
+// current system, trying all possibilities
+// ----------------------------------------------------------------------------
+
+static wxCharacterSet *wxGetCharacterSet(const wxChar *name)
{
- if (!charset) return (wxCharacterSet *)NULL;
- wxLoadCharacterSets();
- for (size_t n=0; n<wxCharsets.GetCount(); n++)
- if (wxCharsets[n].names.Index(charset) != wxNOT_FOUND)
- return &(wxCharsets[n]);
- return (wxCharacterSet *)NULL;
+ // check for the special case of ASCII charset
+#if wxUSE_FONTMAP
+ if ( wxFontMapper::Get()->CharsetToEncoding(name) == wxFONTENCODING_DEFAULT )
+#else // wxUSE_FONTMAP
+ if ( !name )
+#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
+ {
+ // don't convert at all
+ return NULL;
+ }
+
+ // the test above must have taken care of this case
+ wxCHECK_MSG( name, NULL, _T("NULL name must be wxFONTENCODING_DEFAULT") );
+
+ wxCharacterSet *cset;
+
+ if ( wxStricmp(name, wxT("UTF8")) == 0 || wxStricmp(name, wxT("UTF-8")) == 0)
+ {
+ cset = new ID_CharSet(name, &wxConvUTF8);
+ }
+ else
+ {
+#ifdef HAVE_ICONV
+ cset = new IC_CharSet(name);
+#else // !HAVE_ICONV
+ cset = NULL;
+#endif // HAVE_ICONV/!HAVE_ICONV
+ }
+
+ // it can only be NULL in this case
+#ifndef HAVE_ICONV
+ if ( cset )
+#endif // !HAVE_ICONV
+ {
+ if ( cset->usable() )
+ return cset;
+
+ delete cset;
+ cset = NULL;
+ }
+
+#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__)
+ cset = new CP_CharSet(name);
+ if ( cset->usable() )
+ return cset;
+
+ delete cset;
+ cset = NULL;
+#endif // defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__)
+
+#if wxUSE_FONTMAP
+ cset = new EC_CharSet(name);
+ if ( cset->usable() )
+ return cset;
+
+ delete cset;
+ cset = NULL;
+#endif // wxUSE_FONTMAP
+
+ wxLogError(_("Cannot convert from encoding '%s'!"), name);
+
+ return NULL;
}
-WXDLLEXPORT_DATA(wxCSConv) wxConvLocal((const wxChar *)NULL);
+// ============================================================================
+// wxCSConv implementation
+// ============================================================================
wxCSConv::wxCSConv(const wxChar *charset)
{
- m_name = (wxChar *) NULL;
- m_cset = (wxCharacterSet *) NULL;
- m_deferred = TRUE;
- SetName(charset);
+ m_name = (wxChar *)NULL;
+ m_cset = (wxCharacterSet *) NULL;
+ m_deferred = TRUE;
+
+ SetName(charset);
}
wxCSConv::~wxCSConv()
{
- if (m_name) free(m_name);
+ Clear();
+}
+
+wxCSConv::wxCSConv(const wxCSConv& conv)
+ : wxMBConv()
+{
+ Clear();
+ SetName(conv.m_name);
+}
+
+wxCSConv& wxCSConv::operator=(const wxCSConv& conv)
+{
+ Clear();
+ SetName(conv.m_name);
+ return *this;
+}
+
+void wxCSConv::Clear()
+{
+ if (m_name)
+ free(m_name);
+ if (m_cset)
+ delete m_cset;
+ m_name = NULL;
+ m_cset = NULL;
}
void wxCSConv::SetName(const wxChar *charset)
{
- if (charset) {
-#ifdef __UNIX__
- // first, convert the character set name to standard form
- wxString codeset;
- if (wxString(charset,3).CmpNoCase(T("ISO")) == 0) {
- // make sure it's represented in the standard form: ISO_8859-1
- codeset = T("ISO_");
- charset += 3;
- if ((*charset == T('-')) || (*charset == T('_'))) charset++;
- if (wxStrlen(charset)>4) {
- if (wxString(charset,4) == T("8859")) {
- codeset << T("8859-");
- if (*charset == T('-')) charset++;
- }
- }
+ if (charset)
+ {
+ m_name = wxStrdup(charset);
+ m_deferred = TRUE;
}
- codeset << charset;
- codeset.MakeUpper();
- m_name = wxStrdup(codeset.c_str());
- m_deferred = TRUE;
-#endif
- }
}
void wxCSConv::LoadNow()
{
-// wxPrintf(T("Conversion request\n"));
- if (m_deferred) {
- if (!m_name) {
-#ifdef __UNIX__
- wxChar *lang = wxGetenv(T("LANG"));
- wxChar *dot = lang ? wxStrchr(lang, T('.')) : (wxChar *)NULL;
- if (dot) SetName(dot+1);
-#endif
+ if ( m_deferred )
+ {
+ // it would probably be better to make GetSystemEncodingName() always
+ // available (i.e. even when wxUSE_INTL == 0)?
+#if wxUSE_INTL
+ if ( !m_name )
+ {
+ wxString name = wxLocale::GetSystemEncodingName();
+ if ( !name.empty() )
+ {
+ SetName(name);
+ }
+ }
+#endif // wxUSE_INTL
+
+ // wxGetCharacterSet() complains about NULL name
+ m_cset = m_name ? wxGetCharacterSet(m_name) : NULL;
+ m_deferred = FALSE;
}
- m_cset = wxFindCharacterSet(m_name);
- m_deferred = FALSE;
- }
}
size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
{
- ((wxCSConv *)this)->LoadNow(); // discard constness
- if (buf) {
- if (m_cset) {
- for (size_t c=0; c<n; c++)
- buf[c] = m_cset->data[(unsigned char)(psz[c])];
- } else {
- // latin-1 (direct)
- for (size_t c=0; c<n; c++)
- buf[c] = (unsigned char)(psz[c]);
- }
- return n;
- }
- return strlen(psz);
+ ((wxCSConv *)this)->LoadNow(); // discard constness
+
+ if (m_cset)
+ return m_cset->MB2WC(buf, psz, n);
+
+ // latin-1 (direct)
+ size_t len = strlen(psz);
+
+ if (buf)
+ {
+ for (size_t c = 0; c <= len; c++)
+ buf[c] = (unsigned char)(psz[c]);
+ }
+
+ return len;
}
size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
{
- ((wxCSConv *)this)->LoadNow(); // discard constness
- if (buf) {
- if (m_cset) {
- for (size_t c=0; c<n; c++) {
- size_t n;
- for (n=0; (n<256) && (m_cset->data[n] != psz[c]); n++);
- buf[c] = (n>0xff) ? '?' : n;
- }
- } else {
- // latin-1 (direct)
- for (size_t c=0; c<n; c++)
- buf[c] = (psz[c]>0xff) ? '?' : psz[c];
- }
- return n;
- }
- return wcslen(psz);
+ ((wxCSConv *)this)->LoadNow(); // discard constness
+
+ if (m_cset)
+ return m_cset->WC2MB(buf, psz, n);
+
+ // latin-1 (direct)
+ const size_t len = wxWcslen(psz);
+ if (buf)
+ {
+ for (size_t c = 0; c <= len; c++)
+ buf[c] = (psz[c] > 0xff) ? '?' : psz[c];
+ }
+
+ return len;
}
-#endif
- //wxUSE_WCHAR_T
+#endif // wxUSE_WCHAR_T
projects / wxWidgets.git / blobdiff